Drying machine



Oct. 5 ,11926.

T. BOLDY DRYING MACHINE Filed June 29, 1925V 2 sheetssheet 1- ..lll -n 7. i 3 d INVENTOR:

Oct. 5 1926.

T. BLDY DRY'ING MACHINE 2 Sheets-Sheet `2 Filed June 2.9, 1925 INVENTOR;

Patented Oct. 5, 1.926.

UNITED STATES PATENToI-Fica TEMPEST BOLDY, OF BRADFQRD, ENGLAND.

Application filed June 2e, 1925, s

DRYIN G MACHINE.

be used for drying yarn in the hank form or for drying other textile material in an uninished or iinished condition, and to that type oi drying machine in which the material to be dried is carried through a chamber by. a series of endless open-work conveyors arranged one above conveyor the other, each upper being adapted to discharge its )ad upon the one next below it.

The chief .object of is to introduce an improved air cirulatingv which will cause hot air to circulate material on the conveyors; is in a heavy inseparable frequently in the case of system either through the or if such material condition as occurs the present invention wool slivers, to circulate between the superposed conveyors, exert an mcreased drying action on i of the interior of the dition and particularly the bottom -or delivery end where casing. is to cause end of the machine the slivers thereon, keep the whole casing in a heated conthe slivers issue from the A further object of the invention the material to be guided eifrom one conveyor to be fed in wet at one and passed out dry at the other end without any attention being required without there being any risk of ipe which on the part of the attendant and broken ends the sliver during its machine.l

this invention hot air is deheater to a casing through is connected with the casing by ranch pipes which enter the latter at `different levels and extend wholly or vpartly across it, each branch pipe being formed with an aperture for directing the current of hot air in a longitudinal direction in relation to the conveyors the said current being regulated by a slide or other controlling device. The fan'and heater may be arranged on the top o bottom of the conduit or pipe casing at one side n the machine and the may enter the ear the bottom and be formed with two apertures either or both of which may be independently controllable from the exterior of these apertures causes the casing. One of the hot air to pass along the underside of the bottom conveyor from the feed end of the casing'to the de-l livery end and the the hotair to pass other aperture causes directly up the casing eral No. 40,296, and in Great Britain March 5,1925.

at the feed end and also to circulate in a.`

zigzag fashion between the superposed conveyors when the latter are closed in by slivers or other material through which the hot air cannot pass.

- In thc accompanying drawings:

Fig. l is a side elevation of a drying machine constructed according to this invention. Fig. 2 is a plan of the machine shown in Fig. l with the fan and heater removed.

Fig. 3 is an end view oi the drying machine, Vand Figs. 4 and 5 are detached views showing one of the scale.

A indicates the drying machine and B a portion of the delivery end of a Wool back wash machine. y

In -the exampleA shown the drying .machine comprises a rectangular casing containing a number of superposed endless open work conveyors a mounted on drums al and arranged 1n staggered relationship to one another as shown. The endless openwork conveyors are advantageously constructed of wires which extend from one side of the machine to the other and are connected together at intervals by stranded wires which are woven in and out between the transversely arranged wires. The drums al are provided at one end of the machine with sprocket wheels a2 driven -from achain La which is driven by another chain a* through the intervention of change gearing a5 thechain a4 in the example shown being driven from a sprocket wheel b on the back wash machine B. Intermediate portions of the conveyor may be support-ed on rollers which take up slack and keep the conveyors in position and guides a6 are introduced to guide the sliver from one conveyor to another. Situated on the top of the casing is a Jfan C which blows air through a heater D. Extending from the latter is a conduit or pipe d which extends down one side of the casing and enters the latter near the bottom as shown in Fig. 3. IIlle end of the conduit terminates in an elbow d1 Fig. 2

and is formed with spaced openings Z2 Fig. 3) adapted to be covered and uncoverA branch pipes drawn to a larger rectly up the casing at the feed end andv defiecting plates d8 which are constructed as shown in Figs. 4 and 5 to distribute the current of hot air evenly from one side of the casing to the other and causeit to travel longitudinally in relation to the conveyors. Thus, each branch pipe has an elongated longitudinal aperture in which is dis'- posed a series of longitudinally spaced de- 'lectors or delecting plates, which divide the aperture, and y said. defiectors extend gradually increasing distances into the pipe according to the direction of the fiow of air in the pipe. The used air after passing through the casing escapes to the atmosphere through one or more valve controlled outlets (Z9.

IV hat I claim as my invention and desire to secure by Letters Patent in the United States is l. In a drying machine in which the material to be dried is carried through a chamber by a series'oi:l endless openWork conveyors arranged lone above the other, the coinbination of a heater situated o-n the top of the chamber,an air conduit connecting the heater with the chamber and entering the latter at one side near the bottom, the por'- tioii of the conduit which enters the chamber having an' opening at the front and an opening at the top and means for regulating the size of said openings.

2. In a drying machine in which the maan opening at the top, means for regulat-v ing the size of said openings, branch pipes extending from the air conduit and ent/er` ing 4the chamber at diiierent levels, each branch pipe being formed with an aperture for directing the current otl hot air in a longitudinal direction in relation to the conveyors.

3. In a drying machine in which the material to be dried is carried through a chainber by a series of endless openwork conveyors arranged one above the other, the combination of a heater situated on the top of the chamber, an air conduit connecting the heater with the chamber and entering the latter at one side near the bottom, the portion of the conduit Which enters the chamber having an opening at the front and an opening at the top, means for regulating the size of said openings, branch pipes extending from the air conduit and enteringl the chamber at different levels, each branch pipe being formed with an aperture, a series of deitlectors inA each of said apertures extending gradually increasing distances in` tio the corresponding 'branch pipe, and means tor independently controlling the volume of h otl air that can pass Athrough each branch pipe.

In testimony whereof I alix my signature. l g

TEMPEST BoLDY.

side near the bottom, the por- 

